A complete guide to replacing engine mounts on a Nissan Primera P12

Powertrain mounting system in a car Nissan Primera P12 plays a critical role in ensuring the comfort and durability of the drivetrain. Many owners are faced with the fact that rubber-metal elements lose their properties over time, turning into a source of vibrations and shocks. Ignoring this problem can result in serious damage to the body or the transmission itself.

Unlike older models, Primera the second generation has a specific engine mounting scheme, where the load is unevenly distributed. Correct diagnosis and timely replacement engine mounts allow you to return the car to its factory smooth running characteristics. In this article we will analyze all the nuances of the device, symptoms of wear and features of the repair process.

Power unit mounting system design

In design Nissan Primera P12 a combination of hydraulic and rubber-metal cushions is used. The main task of this system is to dampen vibrations created by the engine and prevent their transmission to the body. Hydraulic bearings, which contain a special fluid to dampen low-frequency vibrations, are especially sensitive to wear.

There are three main attachment points that require attention during diagnosis. The upper support often suffers from membrane rupture, and the lower support from deformation of the metal bracket. It is important to understand that replacing only one pillow when the others are clearly worn out will not give the desired effect.

If you feel the steering wheel wobbling at idle, the problem lies precisely in engine mount. In this case, a characteristic knocking sound when changing gears indicates play at the lower mounting point. Incorrect installation of new parts can aggravate the situation by causing engine misalignment.

• ✅ Hydraulic support - ensures maximum riding comfort.
• ❌ Rubber-metal support is simpler, but less effective in damping.
• ⚙️ Gearbox support - often changes along with the engine, as it works in pairs.

⚠️ Attention: The use of low-quality non-original mounts can result in vibration destroying suspension components or tearing mounts out of the body.

Feature of the model P12 is that if the right support breaks, the engine can move so much that its shaft begins to touch the radiator. This is fraught with an emergency situation even when driving at low speed. Therefore, diagnostics should be regular.

The main symptoms of engine mount wear

A malfunction can be determined by a number of indirect and direct signs that become noticeable to the driver. The very first signal is the appearance of unpleasant shaking in the cabin, especially in the area of ​​the steering wheel and pedals. This happens because hydraulic support ceased to perform its damping function.

When starting or braking sharply, you may hear a dull thump in the engine compartment area. This indicates that the engine has suddenly moved and the limit bolt has struck the housing. In some cases, a grinding sound of metal on metal can be heard, which indicates complete destruction of the rubber insert.

You can diagnose the problem visually, but this will require a lift or inspection pit. Inspect the condition of the rubber elements for cracks, delaminations or fluid leaks (if the support is hydraulic). The presence of oily smudges on the hydraulic support is an unambiguous sign of its failure.

Do not confuse knocks from engine mounts with malfunctions of ball joints or silent blocks of levers. For an accurate diagnosis, it is recommended to use a stethoscope or simply ask an assistant to quickly shift gears while you watch the engine. If the engine makes excessive movements, the support does not work.

• 🔊 Strong steering wheel vibration at idle.
• 🔊 Shocks when changing gears or sharp gas.
• 🔊 Visual displacement of the engine relative to the mounts.

⚠️ Attention: Do not attempt to continue operating the vehicle if the bearings are heavily worn. This can lead to a broken radiator hose or damage to the accelerator cables.

Location diagram and article numbers of original spare parts

To make a successful repair, you need to know exactly which parts are suitable for your modification. Nissan Primera P12 was produced with different engine sizes: 1.6, 1.8 and 2.0 liters. Each of them has its own specific fastenings and support articles. Incorrect selection of a part can lead to it simply not fitting into place or not working correctly.

Below is a table with the main part numbers for the most common engines. Always check the part number against your vehicle's VIN before ordering as there may have been design changes between model years.

When choosing analogues, you should be extremely careful. Many Chinese manufacturers offer cheap options, but their service life rarely exceeds 30-40 thousand kilometers. Original parts Nissan designed for significantly longer mileage and retain rubber elasticity longer.

Sometimes a situation arises when the original part is discontinued. In this case, you can consider options from trusted brands, such as Febi or Sakura, but with the obligatory check of reviews about a specific batch. Analogues must have quality markings and certificates of conformity.